<?php
namespace Elementor\Core\Settings\Base;

use Elementor\Core\Common\Modules\Ajax\Module as Ajax;
use Elementor\Core\Files\CSS\Base;
use Elementor\Plugin;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

/**
 * Elementor settings base manager.
 *
 * Elementor settings base manager handler class is responsible for registering
 * and managing Elementor settings base managers.
 *
 * @since 1.6.0
 * @abstract
 */
abstract class Manager {

	/**
	 * Models cache.
	 *
	 * Holds all the models.
	 *
	 * @since 1.6.0
	 * @access private
	 *
	 * @var Model[]
	 */
	private $models_cache = [];

	/**
	 * Settings base manager constructor.
	 *
	 * Initializing Elementor settings base manager.
	 *
	 * @since 1.6.0
	 * @access public
	 */
	public function __construct() {
		add_action( 'elementor/editor/init', [ $this, 'on_elementor_editor_init' ] );

		add_action( 'elementor/ajax/register_actions', [ $this, 'register_ajax_actions' ] );

		$name = $this->get_css_file_name();

		add_action( "elementor/css-file/{$name}/parse", [ $this, 'add_settings_css_rules' ] );
	}

	/**
	 * Register ajax actions.
	 *
	 * Add new actions to handle data after an ajax requests returned.
	 *
	 * Fired by `elementor/ajax/register_actions` action.
	 *
	 * @since 2.0.0
	 * @access public
	 *
	 * @param Ajax $ajax_manager
	 */
	public function register_ajax_actions( $ajax_manager ) {
		$name = $this->get_name();
		$ajax_manager->register_ajax_action( "save_{$name}_settings", [ $this, 'ajax_save_settings' ] );
	}

	/**
	 * Get model for config.
	 *
	 * Retrieve the model for settings configuration.
	 *
	 * @since 1.6.0
	 * @access public
	 * @abstract
	 *
	 * @return Model The model object.
	 */
	abstract public function get_model_for_config();

	/**
	 * Get manager name.
	 *
	 * Retrieve settings manager name.
	 *
	 * @since 1.6.0
	 * @access public
	 * @abstract
	 */
	abstract public function get_name();

	/**
	 * Get model.
	 *
	 * Retrieve the model for any given model ID.
	 *
	 * @since 1.6.0
	 * @access public
	 *
	 * @param int $id Optional. Model ID. Default is `0`.
	 *
	 * @return Model The model.
	 */
	final public function get_model( $id = 0 ) {
		if ( ! isset( $this->models_cache[ $id ] ) ) {
			$this->create_model( $id );
		}

		return $this->models_cache[ $id ];
	}

	/**
	 * Ajax request to save settings.
	 *
	 * Save settings using an ajax request.
	 *
	 * @since 1.6.0
	 * @access public
	 *
	 * @param array $request Ajax request.
	 *
	 * @return array Ajax response data.
	 */
	final public function ajax_save_settings( $request ) {
		$data = $request['data'];

		$id = 0;

		if ( ! empty( $request['id'] ) ) {
			$id = $request['id'];
		}

		$this->ajax_before_save_settings( $data, $id );
		$this->save_settings( $data, $id );

		$settings_name = $this->get_name();

		$success_response_data = [];

		/**
		 * Settings success response data.
		 *
		 * Filters the success response data when saving settings using ajax.
		 *
		 * The dynamic portion of the hook name, `$settings_name`, refers to the settings name.
		 *
		 * @todo Need to be hard deprecated using `apply_filters_deprecated()`.
		 *
		 * @since 1.6.0
		 * @deprecated 2.0.0 Use `elementor/settings/{$settings_name}/success_response_data` filter.
		 *
		 * @param array $success_response_data Success response data.
		 * @param int   $id                    Settings ID.
		 * @param array $data                  Settings data.
		 */
		$success_response_data = apply_filters( "elementor/{$settings_name}/settings/success_response_data", $success_response_data, $id, $data );

		/**
		 * Settings success response data.
		 *
		 * Filters the success response data when saving settings using ajax.
		 *
		 * The dynamic portion of the hook name, `$settings_name`, refers to the settings name.
		 *
		 * @since 2.0.0
		 *
		 * @param array $success_response_data Success response data.
		 * @param int   $id                    Settings ID.
		 * @param array $data                  Settings data.
		 */
		$success_response_data = apply_filters( "elementor/settings/{$settings_name}/success_response_data", $success_response_data, $id, $data );

		return $success_response_data;
	}

	/**
	 * Save settings.
	 *
	 * Save settings to the database and update the CSS file.
	 *
	 * @since 1.6.0
	 * @access public
	 *
	 * @param array $settings Settings.
	 * @param int   $id       Optional. Post ID. Default is `0`.
	 */
	final public function save_settings( array $settings, $id = 0 ) {
		$special_settings = $this->get_special_settings_names();

		$settings_to_save = $settings;

		foreach ( $special_settings as $special_setting ) {
			if ( isset( $settings_to_save[ $special_setting ] ) ) {
				unset( $settings_to_save[ $special_setting ] );
			}
		}

		$this->save_settings_to_db( $settings_to_save, $id );

		// Clear cache after save.
		if ( isset( $this->models_cache[ $id ] ) ) {
			unset( $this->models_cache[ $id ] );
		}

		$css_file = $this->get_css_file_for_update( $id );

		if ( $css_file ) {
			$css_file->update();
		}
	}

	/**
	 * Add settings CSS rules.
	 *
	 * Add new CSS rules to the settings manager.
	 *
	 * Fired by `elementor/css-file/{$name}/parse` action.
	 *
	 * @since 1.6.0
	 * @access public
	 *
	 * @param Base $css_file The requested CSS file.
	 */
	public function add_settings_css_rules( Base $css_file ) {
		$model = $this->get_model_for_css_file( $css_file );

		$css_file->add_controls_stack_style_rules(
			$model,
			$model->get_style_controls(),
			$model->get_settings(),
			[ '{{WRAPPER}}' ],
			[ $model->get_css_wrapper_selector() ]
		);
	}

	/**
	 * On Elementor init.
	 *
	 * Add editor template for the settings
	 *
	 * Fired by `elementor/init` action.
	 *
	 * @since 2.3.0
	 * @access public
	 */
	public function on_elementor_editor_init() {
		Plugin::$instance->common->add_template( $this->get_editor_template(), 'text' );
	}

	/**
	 * Get saved settings.
	 *
	 * Retrieve the saved settings from the database.
	 *
	 * @since 1.6.0
	 * @access protected
	 * @abstract
	 *
	 * @param int $id Post ID.
	 */
	abstract protected function get_saved_settings( $id );

	/**
	 * Get CSS file name.
	 *
	 * Retrieve CSS file name for the settings base manager.
	 *
	 * @since 1.6.0
	 * @access protected
	 * @abstract
	 */
	abstract protected function get_css_file_name();

	/**
	 * Save settings to DB.
	 *
	 * Save settings to the database.
	 *
	 * @since 1.6.0
	 * @access protected
	 * @abstract
	 *
	 * @param array $settings Settings.
	 * @param int   $id       Post ID.
	 */
	abstract protected function save_settings_to_db( array $settings, $id );

	/**
	 * Get model for CSS file.
	 *
	 * Retrieve the model for the CSS file.
	 *
	 * @since 1.6.0
	 * @access protected
	 * @abstract
	 *
	 * @param Base $css_file The requested CSS file.
	 */
	abstract protected function get_model_for_css_file( Base $css_file );

	/**
	 * Get CSS file for update.
	 *
	 * Retrieve the CSS file before updating it.
	 *
	 * @since 1.6.0
	 * @access protected
	 * @abstract
	 *
	 * @param int $id Post ID.
	 */
	abstract protected function get_css_file_for_update( $id );

	/**
	 * Get special settings names.
	 *
	 * Retrieve the names of the special settings that are not saved as regular
	 * settings. Those settings have a separate saving process.
	 *
	 * @since 1.6.0
	 * @access protected
	 *
	 * @return array Special settings names.
	 */
	protected function get_special_settings_names() {
		return [];
	}

	/**
	 * Ajax before saving settings.
	 *
	 * Validate the data before saving it and updating the data in the database.
	 *
	 * @since 1.6.0
	 * @access public
	 *
	 * @param array $data Post data.
	 * @param int   $id   Post ID.
	 */
	public function ajax_before_save_settings( array $data, $id ) {}

	/**
	 * Print the setting template content in the editor.
	 *
	 * Used to generate the control HTML in the editor using Underscore JS
	 * template. The variables for the class are available using `data` JS
	 * object.
	 *
	 * @since 1.6.0
	 * @access protected
	 *
	 * @param string $name Settings panel name.
	 */
	protected function print_editor_template_content( $name ) {
		?>
		<div class="elementor-panel-navigation">
			<# _.each( elementor.config.settings.<?php echo esc_html( $name ); ?>.tabs, function( tabTitle, tabSlug ) { #>
				<div class="elementor-panel-navigation-tab elementor-tab-control-{{ tabSlug }}" data-tab="{{ tabSlug }}">
					<a href="#">{{{ tabTitle }}}</a>
				</div>
				<# } ); #>
		</div>
		<div id="elementor-panel-<?php echo esc_attr( $name ); ?>-settings-controls"></div>
		<?php
	}

	/**
	 * Create model.
	 *
	 * Create a new model object for any given model ID and store the object in
	 * models cache property for later use.
	 *
	 * @since 1.6.0
	 * @access private
	 *
	 * @param int $id Model ID.
	 */
	private function create_model( $id ) {
		$class_parts = explode( '\\', get_called_class() );

		array_splice( $class_parts, count( $class_parts ) - 1, 1, 'Model' );

		$class_name = implode( '\\', $class_parts );

		$this->models_cache[ $id ] = new $class_name( [
			'id' => $id,
			'settings' => $this->get_saved_settings( $id ),
		] );
	}

	/**
	 * Get editor template.
	 *
	 * Retrieve the final HTML for the editor.
	 *
	 * @since 1.6.0
	 * @access private
	 *
	 * @return string Settings editor template.
	 */
	private function get_editor_template() {
		$name = $this->get_name();

		ob_start();
		?>
		<script type="text/template" id="tmpl-elementor-panel-<?php echo esc_attr( $name ); ?>-settings">
			<?php $this->print_editor_template_content( $name ); ?>
		</script>
		<?php

		return ob_get_clean();
	}
}
